AT 3:30PM THE DRIVER APPLIED THE BRAKES IN A LINE OF CARS AT ABOUT 25 MPH. THE PEDAL WENT TO THE FLOOR AND THE BRAKES FAILED COMPLETELY. THE CAR THEN ACCELLERATED INDEPENDENTLY AND STRUCK ANOTHER CAR IN FRONT. ROAD WAS WET, SLIGHT GRADE. THE 2007 BUICK WAS A TOTAL LOSS.